Facts about Eggs
- 11
Boiling an egg for 12 minutes produces a fully cooked yolk, while 6-7 minutes yields a soft-boiled egg with a runny center due to the different heat penetration rates of the yolk versus the white.
- 10
Egg white contains lysozyme, an antibacterial enzyme discovered by Alexander Fleming in 1922 that naturally kills bacteria by breaking down their cell walls.
- 09
Choline in egg yolks crosses the blood-brain barrier more efficiently than from most other food sources, making eggs particularly valuable for fetal neurological development during pregnancy.
- 08
During a hen's lifetime of approximately 2-3 years of peak production, she can lay between 250 and 300 eggs annually, consuming roughly 1.75 pounds of feed per dozen eggs produced.
- 07
Consuming two large eggs provides approximately 155 calories and 13 grams of protein while supplying choline, a nutrient critical for brain development and memory function in humans.
- 06
Eggshells can range from white to brown to blue-green depending on the chicken breed, with the pigmentation determined entirely by genetics and having no effect on nutritional content or taste.
- 05
Raw eggs can contain Salmonella bacteria, which is why the FDA recommends cooking eggs until both the yolk and white reach 160 degrees Fahrenheit to eliminate foodborne illness risk.
- 04
The yolk of a chicken egg contains all nine essential amino acids necessary for human nutrition, making it one of nature's most complete protein sources.
- 03
Over 35 billion eggs are produced annually in the United States, making it the second-largest egg producer globally after China.
- 02
Hens can lay eggs without a rooster present, though unfertilized eggs cannot develop into chicks after 21 days of incubation.
- 01
A chicken egg's shell contains approximately 17,000 pores that allow oxygen to penetrate during the 21-day incubation period.